/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.hadoop.fs.statistics.impl;

import java.time.Duration;

import org.apache.hadoop.fs.statistics.DurationTracker;

/**
 * A simple stub duration tracker which can be issued in interfaces
 * and other places where full duration tracking is not implemented.
 */
public final class StubDurationTracker implements DurationTracker {

  public static final DurationTracker STUB_DURATION_TRACKER =
      new StubDurationTracker();

  private StubDurationTracker() {
  }

  @Override
  public void failed() {

  }

  @Override
  public void close() {

  }

  @Override
  public Duration asDuration() {
    return Duration.ZERO;
  }
}
